Malicious PDF — malware analysis report

Static analysis result for SHA-256 0454f14abf342a9f…

MALICIOUS

PDF

84.9 KB Created: 2021-03-06 23:48:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 058a80e4beae006f7bc01db89f1eb5df SHA-1: 16d1722f9776df27ce02784b5f2f0e5345e513f6 SHA-256: 0454f14abf342a9fc4c29173b20dc8e175ca87af9c51601b8352235fedddd778
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as a link farm and by a machine learning classifier as malicious. It contains numerous external links, many pointing to disposable hosting, and one specific URL, 'https://resalured.ru/123?utm_term=enfermedades+sistema+endocrino+comunes', is highlighted. The document body, though heavily obfuscated, suggests a theme related to endocrine system diseases, likely a lure for SEO manipulation or phishing. No scripts were extracted, but the overall structure and link farm behavior indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://resalured.ru/123?utm_term=enfermedades+sistema+endocrino+comunes PDF link annotation
    • http://xiwakaravivomik.scienceontheweb.net/a_streetcar_named_desire_stella_and_blanche_relationship.pdfIn PDF document text
    • https://cdn.sqhk.co/dodazija/ifhijfm/8203499417.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/hhTAib9/jaxusefagosesuzib.pdfIn PDF document text
    • https://cdn.sqhk.co/lisakopew/jbSbjex/splash_lagoon_nearby_hotels.pdfIn PDF document text
    • http://zijozarub.mygamesonline.org/lezuvamezibujigenemofu.pdfIn PDF document text
    • https://cdn.sqhk.co/logubaxe/hc5TyLz/this_is_the_police_hit_and_run_frames.pdfIn PDF document text
    • https://cdn.sqhk.co/kidurukazag/auw8ES9/wakarixibonegolemekoz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_04cd95a195f34c77b830d0f37c514af5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/63e8f7a3-b367-4697-a145-23ab864a5566/lumion_for_sketchup_2016_free_download_64_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50331959-49bd-402f-a8b1-4fa4030e6f35/live_forever_tab.pdfIn PDF document text
    • https://9e1b5e4e-b4ab-405b-8fdf-b3b6d7b19c28.filesusr.com/ugd/94ea38_969c0ef8ff5b487e8c60d220e8bc3a70.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4758ee77-4cd7-48b3-b2f7-276a80e01a6b/nessun_dorma_lyrics_in_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbabce6d-eb89-4627-85e5-bd4a3d284542/dutejizidekefuxalitij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92ff0c82-2a42-415b-a5be-20e56a5d2dd9/ideal_team_player_synopsis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b45d13fb-b765-4685-b435-53dca5b48ced/how_do_you_become_a_kid_spy.pdfIn PDF document text
    • https://97a45c9e-1ab5-462a-bfe2-fded34b9a8b9.filesusr.com/ugd/b50c55_43281d9c8ca74630afba180a66feeed0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/12b580c8-b8e4-4b1f-9076-d20464ac3c71/caracteristicas_principales_del_modo_de_produccion_de_la_comunidad_primitiva_esclavista.pdfIn PDF document text
    • https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_658c0b1f5b594e83bf2a133c05cabc5d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5ef1f5a-f674-4716-9062-babdfa4bd07c/sea_monster_names_greek.pdfIn PDF document text
    • https://336ddc11-c37d-4cd6-9685-7accad2975f7.filesusr.com/ugd/479fa9_e562969116e14963951ce82bef8b9cae.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7707146c-4763-4668-bd24-bfb5e2505a6b/65944090629.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e9912b5-830c-4f7e-99f8-f65c6e3dfb84/how_to_unlock_ipod_nano_1st_generation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/600cd49d-1943-47f6-8890-cc61459058dd/notas_de_para_elisa_piano_do-re-mi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D5 5092 bytes
SHA-256: b6cde8bd4adaa4e182a76762cc8e965e7a5cc2d5b149b337ac3f83fe7647a4d9
font_01_sfnt_off0001090f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1090F 11624 bytes
SHA-256: 0a7685c3c503de2684ac623805c73eae9a85d0e66734d7d20a56df697b196d2d
font_02_sfnt_off00012f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F00 16076 bytes
SHA-256: ff25e7f6a43f1b59442a35e56bc56f3cfd2cff6193593d34390440b8d778df35